Figure 2. Mathematical simulation of three uncontrolled batch fermentation of immobilized Bifidobacterium animalis subsp. lactis Bb 12 cellsin 3 MWE medium. Calculated data (continuous lines), experimental data: biomass concentration (●), lactic and acetic acid concentration (∆), lactose concentration (□). (a) gellan-xanthan, (b) Alginate-chitosan and (c) K-carageenan- locust been.